Thinking hard and deep about concepts and ideas requires focus and concentration. This means actively combating the systems and mechanisms that seek out our attention. In the modern age, there are too many distracting things to do this easily. Adverts move and shake, audio is part of it, dopamine fix in the form of social media, the innumerable ways in which people communicate with us (email, social media, phone, text messages, etc.). It takes effort to check it all.
I deleted all my social media accounts years ago, turned off all notifications except the phone ringer, only pay for the local NPM stream and a local Jellyfin media server, all in an effort to quiet the external noise. I still find difficulty in maintaing concentration for long lengths of time. And now, with the use of LLMs and AI, it becomes ever easier to forgo thought for fabricated results.